Drain and cook pasta according to directions on package. I like to add about 2 tablespoons of salt to my pasta water.
In a large skillet on high heat, heat 2 tablespoons of EVOO, and then add the sausage. Cook until the fat has been rendered from the pan and sausage is prepared thoroughly. Remove sausage from the pan and set aside.
In the same pan on medium heat, add 2 tablespoons of EVOO and add the mushrooms. Cook the mushrooms until the are nice and tender. Then add in the garlic until fragrant.
Stir in the sausage, diced tomatoes, tomato sauce, tomato paste, sale and pepper. Simmer for approximately 8 minutes, stirring occasionally.
Finally, add the tortellini pasta, parmesan cheese, and baby spinach. Toss until all ingredients are integrated and the spinach has wilted.
Serve with some extra parmesan cheese on top!